Building on the top of rooftops is becoming fairly common on our over-crowded planet, but have you ever seen a home that has 3 box rooms, 3 trees and a meadow on its roof? <a href="http://www.christ-christ.cc/">Roger Christ</a> was commissioned by a family of four to expand a German bungalow originally built in the 1960s, but he had to go vertical instead of horizontal because of space restrictions. In response to these challenges, he planted 3 glass boxes connected by a highly glazed, transparent corridor on a <a href="http://en.wikipedia.org/wiki/Cantilever">cantilevered roof</a>, and surrounded them with a courtyard, a mini-meadow, and trees!

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House S by Roger Christ

Roger Christ was commissioned to give House S a sustainable upgrade

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House S by Roger Christ

The original 1960s bungalow was gutted

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House S by Roger Christ

3 glass boxes were added to the roof

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House S by Roger Christ

The new rooms are connected by a glass corridor

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House S by Roger Christ

A meadow, courtyard, and 3 trees were also planted on the cantilevered roof

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House S by Roger Christ

The green spaces add insulation and act as a carbon sink

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House S by Roger Christ

The pine tree!

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House S by Roger Christ

Triple glazing upstairs and downstairs permit a lot of natural lighting without the solar gain

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House S by Roger Christ

This is the ultimate response to urban density

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House S by Roger Christ

The family of four can even watch films projected on a rooftop wall

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House S by Roger Christ

This aerial view gives a complete look at this brilliant renovation

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House S by Roger Christ

From above, one would have no idea this whole new section was built on a flat roof!

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House S by Roger Christ

Building on the top of rooftops is becoming fairly common on our over-crowded planet, but have you ever seen a home that has 3 box rooms, 3 trees and a meadow on its roof? Roger Christ was commissioned by a family of four to expand a German bungalow originally built in the 1960s, but he had to go vertical instead of horizontal because of space restrictions. In response to these challenges, he planted 3 glass boxes connected by a highly glazed, transparent corridor on a cantilevered roof, and surrounded them with a courtyard, a mini-meadow, and trees!